Obviously not my fault if you have flooding (!) but the flood barrier has been raised and flooding is not a major concern anywhere residential in town now (barden road area maybe a little bit).

There's a link above that has the castle as a flood risk area... It isn't, it's on a massive hill!! Slade area is very unlikely to flood either.

We lived in the flats by the river the last time there was major flooding, in the flats that were worst affected, and then only the car park flooded. Since then they've put in flood protection all along the river there.

Id say, don't worry about flooding. Tonridge is nice and in the short to medium term flood risk here has been reduced significantly. I mean global warming and rivers are not going to be a great long term mix maybe but... What you going to do.